A floating self-clamping clamp

Abstract

The utility model provides a kind of floating self-locking clamp, including clamp table, the circumferential side equidistance annular arrangement fixed mounting of displacement module is installed in clamp table, the middle part fixed mounting of clamp table has drive module, the output end of drive module and the inner end of displacement module are connected, the moving end top fixed mounting of displacement module has floating clamping module;During the application of the technical scheme, by setting drive module, displacement module and floating clamping module with isosceles trapezoidal trapezoidal frame, the screw rod and clamping assembly can be driven by main and auxiliary bevel gear synchronous transmission, and the trapezoidal frame slope is formed around the holding of different diameter end cover by clamping plate, reach displacement synchronization, clamping stable and the effect of adaptation of multiple specifications, solve the problems that fixture lacks linkage in prior art, deviation, clamping structure fixed general poor and end cover easy to loosen deviation, without replacing component can process multiple end cover, improve machining accuracy and stability.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology, and in particular to a floating self-locking clamp. Background Technology

[0002] Currently, in the field of motor manufacturing, the motor end cover is a key component of the motor housing. Its machining accuracy directly affects the motor's sealing performance, assembly accuracy, and operational stability. Turning is one of the core processes in the forming of motor end covers. Turning is a method of cutting the workpiece by rotating it relative to the cutting tool on a lathe. The cutting energy is mainly provided by the workpiece. Vertical lathes are widely used in the machining of motor end covers because they are suitable for machining large and heavy parts with large diameters, relatively small axial dimensions, and complex shapes. They can complete various machining operations such as inner and outer cylindrical surfaces, conical surfaces, end faces, grooves, cutting, drilling, reaming, boring, and boring holes. With the help of attachment devices, they can also realize functions such as thread cutting, contouring, milling, and grinding, providing the equipment foundation for high-precision machining of motor end covers.

[0003] However, in the current turning technology of motor end caps, there are many problems with the turning fixtures used for motor end caps that urgently need to be solved, which seriously restrict the processing efficiency and product quality. On the one hand, the existing turning fixtures are of single size, which makes it difficult to adapt to the processing needs of motor end caps of different specifications, and the complex structure leads to high production costs. On the other hand, during the turning process, the clamping stability of the fixture on the motor end cap is insufficient, and the motor end cap is prone to loosening, which directly affects the turning accuracy and causes the dimensional deviation of the motor end cap after processing to exceed the allowable range, failing to meet the assembly requirements. In addition, the common claw-type metal fixtures have high hardness and are prone to hard contact with the surface of the motor end cap during the clamping process, causing scratches or indentations on the surface of the end cap, damaging the appearance quality of the motor end cap, and may also damage the protective coating on the surface of the end cap, affecting its corrosion resistance and shortening the overall service life of the motor.

[0004] To address the aforementioned issues, related fields have undertaken technological optimizations. For instance, Chinese patent CN223070984U discloses a dual-positioning floating turning fixture. This fixture, through the cooperation of a support frame, base, clamping drive device, guide rail assembly, sliding seat, arc-shaped fixing block, rotating pressure block, and floating spring, achieves floating clamping and limiting of a circular motor end cap, improving clamping flexibility and workpiece surface protection to some extent. However, in practical applications, this technical solution still has significant drawbacks: Firstly, the clamping structure is designed based on a circular shape. When the diameter of the circular motor end cap being machined is inconsistent with the matching diameter of the arc-shaped fixing block, if the diameter of the arc-shaped fixing block is larger... Regarding the workpiece diameter, after clamping, the workpiece will wobble inside the fixture, making it impossible to achieve stable and precise clamping. This makes it difficult to adapt to the processing requirements of motor end caps of different diameters, resulting in poor versatility. Secondly, the various clamping and limiting components of the fixture lack a linkage structure, making it impossible to synchronize multiple fixture components. This causes time differences and deviations in the actions of each component during clamping, failing to form a synchronized and coordinated clamping effect. This easily leads to uneven force on the motor end cap, which not only affects clamping stability but may also cause deformation of the end cap due to excessive local force, further reducing processing accuracy. It is evident that the existing motor end cap turning fixture has shortcomings in terms of versatility, clamping stability, and synchronization, thus requiring improved design. Utility Model Content

[0005] To address the aforementioned problems, this invention proposes a floating self-locking clamp to more accurately resolve the problems described above.

[0006] This utility model is achieved through the following technical solution:

[0007] This utility model proposes a floating self-locking clamp, including a clamping platform. Displacement modules are fixedly installed in a ring at equal intervals around the periphery of the clamping platform. A driving module is fixedly installed in the middle of the clamping platform. The output end of the driving module is connected to the inner end of the displacement module. A floating clamping module is fixedly installed on the top of the moving end of the displacement module.

[0008] The displacement module includes a slide groove, which is arranged in a ring at equal intervals on the outside of the fixture table. A lead screw is rotatably connected inside each slide groove, and a slider is threadedly connected to the outer surface of the lead screw. The slider is slidably connected inside the slide groove. The inner end of the lead screw is connected to the output end of the drive module through a coupling. The floating clamping module is fixedly connected to the top of the slider.

[0009] Furthermore, the drive module includes a base, which is fixedly connected to the middle of the fixture table. A circular groove is formed in the middle of the top of the base. A main bevel gear is rotatably connected to the bottom center of the circular groove. A drive motor is fixedly installed at the bottom of the base. The output end of the drive motor is connected to the bottom of the main bevel gear through a coupling. A secondary bevel gear is rotatably connected to the inner wall of the circular groove in a ring at equal intervals. The inner end of the lead screw is connected to the outer side of the secondary bevel gear through a coupling.

[0010] Furthermore, the drive module also includes a cover plate, which is bolted to the top of the base and covers the outer side of the main bevel gear and the secondary bevel gear in the circular groove.

[0011] Furthermore, the bottom of the fixture platform is fixedly equipped with support legs arranged in a ring at equal intervals, and the bottom of the support legs is fixedly equipped with mounting rings.

[0012] Furthermore, the top of the mounting ring has mounting holes arranged in a ring at equal intervals, the mounting holes being countersunk holes, and the outer corners of the mounting ring and the fixture table being rounded.

[0013] Furthermore, the floating clamping module includes a fixed arm, which is fixedly installed on the top of the slider. A trapezoidal frame is fixedly installed on the inner end of the fixed arm. The trapezoidal frame is arranged in an isosceles trapezoidal shape when viewed from above. Floating clamping units are fixedly connected to the two inclined surfaces on the inner side of the trapezoidal frame.

[0014] Furthermore, the floating clamping assembly includes floating springs, which are linearly arranged at equal intervals and fixedly installed on the inclined surfaces of both sides of the trapezoidal frame. A clamping plate is fixedly installed on the side of the floating spring away from the trapezoidal frame. A support guide shaft is fixedly installed at both ends of the outer side of the clamping plate. The outer end of the support guide shaft passes through the trapezoidal frame, and the support guide shaft and the trapezoidal frame are slidably connected.

[0015] The beneficial effects of this utility model are:

[0016] 1. During the application of this technical solution, by setting up a drive module and a displacement module, the main and auxiliary bevel gears of the drive module can be synchronously meshed and driven to drive the lead screws of all displacement modules to rotate synchronously. This drives the slider to move the floating clamping module synchronously closer to or further away from the center of the clamp, realizing the coordinated action of multiple clamping components. This achieves high synchronization of displacement adjustment and uniform clamping force, solving the problems of easy clamping deviation and inconsistent action of multiple components caused by the lack of linkage structure in the existing technology. It ensures that the motor end cover is always aligned with the center of the clamp during the clamping process, avoiding loosening or deformation due to uneven force, and improving the stability and accuracy of the processing process.

[0017] 2. During the application of this technical solution, by setting an isosceles trapezoidal frame in the floating clamping module, the inner inclined surface of the trapezoidal frame can provide an inclined installation reference for the clamping plate during use. This allows the clamping plate to form a multi-directional symmetrical encircling clamping of the circular motor end cover. Regardless of the diameter of the end cover, the clamping plate can fit the outer circular surface of the end cover, achieving the effect of adapting to multiple specifications of end covers and stable clamping and positioning. This solves the problem of poor versatility and unstable clamping of end covers of different diameters caused by the fixed clamping structure in the existing technology. It can adapt to the processing needs of multiple specifications without changing the clamping components, and at the same time avoids the end cover from shifting during the turning process, further ensuring processing accuracy and product quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of this utility model from below;

[0020] Figure 3 This is a top view of the structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the floating clamping module structure of this utility model;

[0022] Figure 5 This utility model Figure 3 A magnified structural diagram at point A.

[0023] In the diagram: 1. Fixture table; 2. Displacement module; 21. Slide groove; 22. Lead screw; 23. Slider; 3. Drive module; 31. Base; 32. Circular groove; 33. Main bevel gear; 34. Drive motor; 35. Secondary bevel gear; 36. Cover plate; 4. Floating clamping module; 41. Fixed arm; 42. Trapezoidal frame; 43. Floating clamping assembly; 431. Floating spring; 432. Clamping plate; 433. Support guide shaft; 5. Support leg; 6. Mounting ring; 7. Mounting hole. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] A floating self-locking clamp includes a clamping platform 1, with displacement modules 2 fixedly installed in a ring at equal intervals around the periphery of the clamping platform 1, a drive module 3 fixedly installed in the middle of the clamping platform 1, the output end of the drive module 3 being connected to the inner end of the displacement module 2, and a floating clamping module 4 fixedly installed on the top of the moving end of the displacement module 2.

[0027] The displacement module 2 includes a slide groove 21, which is arranged in a ring at equal intervals on the outside of the fixture table 1. A lead screw 22 is rotatably connected inside each slide groove 21, and a slider 23 is threadedly connected to the outer surface of the lead screw 22. The slider 23 is slidably connected inside the slide groove 21. The inner end of the lead screw 22 is connected to the output end of the drive module 3 via a coupling. A floating clamping module 4 is fixedly connected to the top of the slider 23. During application, this device, by setting up the fixture table 1, the peripheral displacement module 2, the central drive module 3, and the floating clamping module 4 at the moving end of the displacement module 2, allows the drive module 3 to be started first. The output end of the drive module 3 drives the lead screw 22 of the displacement module 2 to rotate via the coupling. When the lead screw 22 rotates, it drives the slider 23 threadedly connected to its outer surface. Sliding along the slide groove 21, the slider 23 drives the floating clamping module 4 at the top to move, thereby clamping or releasing the workpiece. Throughout the process, the displacement modules 2 are arranged in a ring at equal intervals, allowing the floating clamping module 4 to move closer to or further away from the workpiece simultaneously from multiple directions, ensuring that the clamping force is applied evenly to the workpiece and preventing the workpiece from shifting due to uneven force. The cooperation between the drive module 3 and the displacement module 2 can precisely control the moving distance of the floating clamping module 4, adapting to the clamping requirements of workpieces of different sizes, without the need for frequent replacement of clamping components. This design not only simplifies the clamping operation process but also improves the stability of workpiece clamping, solving the problems of workpiece loosening and poor adaptability caused by uneven clamping force in existing technologies, making the processing process smoother and effectively ensuring processing accuracy.

[0028] Combination Figures 1-3 and Figure 5As shown, the drive module 3 includes a base 31, which is fixedly connected to the middle of the fixture table 1. A circular groove 32 is formed in the middle of the top of the base 31. A main bevel gear 33 is rotatably connected to the bottom center of the circular groove 32. A drive motor 34 is fixedly installed at the bottom of the base 31. The output end of the drive motor 34 is connected to the bottom of the main bevel gear 33 through a coupling. A secondary bevel gear 35 is rotatably connected to the inner wall of the circular groove 32 in a ring at equal intervals. The inner end of the lead screw 22 is connected to the outer side of the secondary bevel gear 35 through a coupling. The drive module 3 also includes a cover plate 36, which is bolted to the top of the base 31. The cover plate 36 covers the outer side of the main bevel gear 33 and the secondary bevel gear 35 in the circular groove 32. Support legs 5 are fixedly installed in a ring at equal intervals at the bottom of the fixture table 1. Mounting rings 6 are fixedly installed at the bottom of the support legs 5. Mounting holes 7 are opened in a ring at equal intervals at the top of the mounting rings 6. The mounting holes 7 are countersunk holes. The outer corners of the mounting rings 6 and the outer corners of the fixture table 1 are rounded.

[0029] In the above-described embodiments of this application, during the application of this device, by setting a base 31, main bevel gear 33, secondary bevel gear 35, drive motor 34, cover plate 36, and support legs 5 and mounting ring 6 at the bottom of the fixture table 1, the device can be fixed first through the countersunk hole of the mounting ring 6 during use. The support legs 5 provide stable support for the fixture table 1. The rounded edges of the mounting ring 6 and the fixture table 1 prevent operators from being scratched. After starting the drive motor 34, its output end drives the main bevel gear 33 in the circular groove 32 of the base 31 to rotate through the coupling. The main bevel gear 33 meshes with the secondary bevel gear 35 on the inner wall of the circular groove 32, driving all the secondary bevel gears 35 to rotate synchronously. The secondary bevel gears 35 then... The coupling drives the lead screw 22 of the displacement module 2 to rotate; the cover plate 36 covers the outside of the main and auxiliary bevel gears 35 to prevent machining debris from entering and affecting the transmission, while protecting the gear structure. Throughout the process, the synchronous transmission of the main and auxiliary bevel gears 35 ensures that all lead screws 22 rotate at the same speed, thereby allowing the slider 23 of the displacement module 2 to move synchronously, ensuring uniform subsequent clamping actions; the countersunk hole design makes the device more secure and avoids shaking during processing. This design not only improves the stability and accuracy of power transmission, but also enhances the reliability of device installation and operational safety, solving problems such as uneven power transmission, unstable device fixation, and operational safety hazards that may exist in the existing technology, laying a stable foundation for subsequent workpiece clamping and processing.

[0030] Example 2

[0031] Combination Figures 1-4As shown, the floating clamping module 4 includes a fixed arm 41, which is fixedly installed on the top of the slider 23. A trapezoidal frame 42 is fixedly installed on the inner end of the fixed arm 41. The trapezoidal frame 42 is arranged in an isosceles trapezoidal shape when viewed from above. Floating clamping groups 43 are fixedly connected to the two inclined surfaces on the inner side of the trapezoidal frame 42. The floating clamping groups 43 include floating springs 431. The floating springs 431 are linearly arranged at equal intervals and fixedly installed on the inclined surfaces on both sides of the trapezoidal frame 42. A clamping plate 432 is fixedly installed on the side of the floating springs 431 away from the trapezoidal frame 42. A support guide shaft 433 is fixedly installed on both ends of the outer side of the clamping plate 432. The outer end of the support guide shaft 433 passes through the trapezoidal frame 42 and the support guide shaft 433 and the trapezoidal frame 42 are slidably connected.

[0032] In the above-described embodiments of this application, during the application of this device, by setting a fixed arm 41, a trapezoidal frame 42, and a floating clamping group 43 in the floating clamping module 4, the fixed arm 41 can bear the driving force of the slider 23, driving the trapezoidal frame 42 and the floating clamping group 43 to move synchronously. The trapezoidal frame 42 is an isosceles trapezoid when viewed from above, and its two inner inclined surfaces provide a mounting base for the floating clamping group 43. When the floating clamping group 43 approaches the workpiece, the clamping plate 432 first contacts the surface of the workpiece. As the trapezoidal frame 42 continues to move, the trapezoidal frame 42 pushes the floating spring 431 to compress. The elastic force generated by the floating spring 431 acts on the workpiece through the clamping plate 432, realizing floating clamping. The support guide shaft 433 passes through the trapezoidal frame 42 and is connected to the workpiece. The trapezoidal frame 42 is slidably connected, which can limit the movement direction of the clamping plate 432 and prevent the clamping plate 432 from shifting during the floating process, ensuring that the clamping force is evenly applied to the workpiece. Throughout the process, the isosceles trapezoidal frame 42 allows the floating clamping assemblies 43 on both sides to clamp the workpiece from a symmetrical direction, adapting to the outer contour of the circular workpiece. The elastic deformation of the floating spring 431 can buffer the impact force during the clamping process and prevent the workpiece surface from being damaged due to hard contact. The support guide shaft 433 further improves the clamping stability. This design not only ensures the accuracy and stability of the clamping, but also protects the workpiece surface through the floating structure, solving the problems of uneven clamping force and easy damage to the workpiece surface that may exist in the prior art, and providing reliable clamping guarantee for subsequent processing.

[0033] The working principle and advantages of this utility model are as follows: During application, the device, by setting support legs 5 and mounting ring 6, can be fixed on the vertical lathe worktable. The countersunk hole at the top of the mounting ring 6 allows bolts to be inserted for a secure connection. The countersunk hole design avoids the bolt head protruding and affecting the stability of the placement. Support legs 5 provide horizontal support for the fixture table 1, ensuring that the fixture table 1 remains stable during processing. The outer edges of the fixture table 1 and the outer edges of the mounting ring 6 are rounded, which can effectively prevent operators from being scratched by the sharp edges when approaching the equipment. After the device is installed with bolts, the drive module 3 is started and the power transmission is completed. The drive motor 34 of the drive module 3 is started, and the output end of the drive motor 34 drives the main bevel gear in the circular groove 32 at the top of the base 31 through the coupling. When wheel 33 rotates, the base 31 provides stable support for the main bevel gear 33 and the secondary bevel gear 35, preventing gear misalignment during transmission. The cover plate 36 is bolted to the top of the base 31, preventing machining debris from entering the gear meshing area and affecting transmission accuracy, and protecting the gear structure from external impact damage. When the main bevel gear 33 rotates, it precisely meshes with the secondary bevel gear 35 on the inner wall of the circular groove 32, thereby driving all secondary bevel gears 35 to rotate synchronously. The secondary bevel gear 35 is connected to the inner end of the lead screw 22 of the displacement module 2 through a coupling, so that all lead screws 22 rotate synchronously in the sliding groove 21, realizing the synchronous transmission of power from the drive module 3 to the displacement module 2, ensuring that the actions of multiple displacement modules 2 are completely consistent, laying the foundation for subsequent uniform clamping.

[0034] Then, the clamping position is adjusted and adapted for processing. When the lead screw 22 rotates, it drives the slider 23, which is threaded on its outer surface, to move inward along the slide groove 21. The floating clamping module 4 on the top of the slider 23 moves towards the center of the fixture table 1 synchronously with the slider 23. The fixed arm 41 of the floating clamping module 4 provides stable support for the trapezoidal frame 42. The trapezoidal frame 42 is designed as an isosceles trapezoid, and its inner inclined surface provides an installation reference for the floating clamping module 43, so that the clamping plate 432 is set at an inclination. This design of the inner inclined surface of the isosceles trapezoid allows the inclined clamping plate 432 in each trapezoidal frame 42 to form multi-directional symmetry with respect to the circular product to be processed. The limiting force ensures that the inclined clamping plate 432 conforms to the outer surface of the product regardless of its diameter, creating a wraparound clamping effect that effectively prevents product displacement during clamping and significantly improves clamping stability. When the floating clamping module 4 approaches the motor end cover, the floating clamping group 43 on the inner inclined surface of the trapezoidal frame 42 first contacts the surface of the motor end cover through the clamping plate 432. As the slider 23 continues to move inward, the trapezoidal frame 42 pushes the floating spring 431 to compress. The elastic force of the floating spring 431 is transmitted to the surface of the motor end cover through the clamping plate 432, achieving floating clamping and providing support and guidance. Shaft 433 restricts the clamping plate 432 to move only along the guide shaft direction, preventing the clamping plate 432 from tilting during floating and further ensuring that the clamping force is evenly applied to the motor end cover. When the floating spring 431 is compressed to its maximum extent and can no longer be compressed and deformed, the clamping force becomes rigid, firmly locking the position of the motor end cover and preventing it from loosening during turning. If there are slight dimensional deviations or machining vibrations in the motor end cover during turning, the floating spring 431 can buffer the external force through slight deformation, preventing the external force from directly acting on the end cover and causing damage. If motor end covers of different diameters need to be machined, Simply control the drive motor 34 to reverse, causing the lead screw 22 to reverse and move the slider 23 outward. Adjust the spacing between the floating clamping modules 4 to quickly adapt to the new specification end cap without replacing any clamping components. After processing, reset the drive motor 34 to reverse and drive the main bevel gear 33 to rotate in the opposite direction. The secondary bevel gear 35 rotates in the opposite direction with the main bevel gear 33. The lead screw 22 then reverses and moves the slider 23 outward. The floating clamping modules 4 move away from the motor end cap in sync. The floating spring 431 gradually returns to its original state, and the clamping plate 432 separates from the surface of the motor end cap. The operator can easily remove the processed end cap.

[0035] Throughout the entire process, this technical solution achieves synchronous adjustment of multiple displacement modules 2 through the synchronous transmission of the main and auxiliary bevel gears 35 of the drive module 3. It can adapt to motor end caps of various diameters without the need to replace the clamping components, effectively solving the problems of existing clamps having single size and poor versatility. The synchronous clamping action combined with the clamping design of the isosceles trapezoidal inner inclined surface guide ensures that the motor end cap is evenly stressed and can be limited in multiple directions, greatly improving the processing accuracy and solving the problems of insufficient clamping stability and easy loosening of existing clamps. The design of the floating spring 431 can assist in floating and improve the clamping adaptability. At the same time, it can assist in buffering when dealing with fragile products. The support guide shaft 433 ensures that the clamping plate 432 moves smoothly, effectively solving the problem of claw-type metal clamps easily damaging the surface of the end cap. At the same time, the linkage transmission of the main and auxiliary bevel gears 35 ensures that the center of the end cap is precisely aligned with the center of the clamp, avoiding deformation of the end cap due to uneven stress. This solves the problems of existing floating clamps lacking linkage and easy clamping deviation, ultimately significantly improving the product qualification rate.

[0036] In this technical solution, the drive motor 34 is a DC servo motor, model 130ST-M06025, with a rated power of 500-750W, a rated voltage of 220V, and a rated speed of 1500-3000rpm. The motor is equipped with a gearbox reducer with a reduction ratio of 1:20-1:50, and the motor shaft is equipped with an incremental encoder with a resolution of 500-1000 lines, which can realize flexible adjustment of rotation and stepless speed regulation to ensure the transmission accuracy of the lead screw 22. The controller is an STM32H743 series microcontroller, which is installed in the protective box between the support legs 5 at the bottom of the fixture table 1. The controller integrates a 7-inch TFT color display screen to display the motor speed, clamping force parameters, and sensor data. The auxiliary sensors include limit switches, model D4C-1202, with a rated current of 1-3A, installed at both ends of the slide 21 to prevent the slider 23 from overtraveling.

[0037] A pressure sensor, model FSR402, with a measurement range of 0-100N, is installed inside the clamping plate 432 to monitor the clamping force. A photoelectric sensor, model E3Z-LS63, with a detection distance of 50-200mm, is installed at the center of the fixture table 1 to determine whether the motor end cover is in place. The circuit connection is as follows: the external 220V AC power supply is converted to 24V DC power supply through a switching power supply to power the controller, encoder, limit switch, pressure sensor and photoelectric sensor. The 220V AC power supply directly powers the drive motor 34.

[0038] The drive motor 34 is connected to the controller via a servo driver (model ASD-A2-0721-M). The controller receives encoder feedback signals and outputs PWM signals through a PID algorithm to control the servo driver, thereby adjusting the motor speed and direction. The signal terminals of the limit switch, pressure sensor, and photoelectric sensor are all connected to the controller via an RS485 bus. The pressure sensor transmits clamping force data in real time. When the clamping force reaches the set threshold or the pressure sensor detects that the floating spring 431 is compressed to its maximum extent, the controller outputs a signal to control the motor to stop rotating, achieving rigid clamping and locking. When the limit switch is triggered, the controller immediately cuts off the motor drive signal to prevent the slider 23 from overtraveling and damaging the components. After the photoelectric sensor detects the motor end cover, it sends a signal to the controller, which starts the drive motor 34 to begin the clamping action, forming a complete closed-loop control circuit to ensure accurate and stable clamping.

[0039] The scope of protection of this application does not involve improvements to the electronic components of the device or equipment. Therefore, the working principle of each electronic component is not described in detail here. The electronic components in this application are all conventional electronic components used in the prior art. They are all conventional technical means in the prior art and the application of the prior art is very mature. Therefore, they will not be described in detail here.

[0040] During the application of this device, a bellows cover is provided on the outside of the lead screw 22 and the slider 23. The bellows cover is a cover with a telescopic structure. It is set to cover the outside of the lead screw 22. The bellows cover itself can cover and shield the lead screw 22 to prevent the lead screw 22 from being exposed, and at the same time, it will not affect the normal sliding of the entire device. The bellows cover is a prior art. For the sake of easy and intuitive viewing, the lead screw 22 is not shown in the attached drawings. However, in actual application, a bellows cover will be installed on the outside of the lead screw 22. Since it is a prior art, it will not be described in detail here.

[0041] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. A floating self-locking clamp, characterized in that, The fixture includes a fixture platform (1), on which displacement modules (2) are fixedly installed in a ring at equal intervals around the periphery of the fixture platform (1), and a drive module (3) is fixedly installed in the middle of the fixture platform (1). The output end of the drive module (3) is connected to the inner end of the displacement module (2), and a floating clamping module (4) is fixedly installed on the top of the moving end of the displacement module (2). The displacement module (2) includes a slide groove (21), which is arranged in a ring at equal intervals on the outside of the fixture table (1). A lead screw (22) is rotatably connected inside each slide groove (21). A slider (23) is threadedly connected to the outer surface of the lead screw (22). The slider (23) is slidably connected inside the slide groove (21). The inner end of the lead screw (22) is connected to the output end of the drive module (3) through a coupling. The floating clamping module (4) is fixedly connected to the top of the slider (23).

2. The floating self-locking clamp according to claim 1, characterized in that, The drive module (3) includes a base (31), which is fixedly connected to the middle of the fixture table (1). A circular groove (32) is provided in the middle of the top of the base (31). A main bevel gear (33) is rotatably connected to the bottom of the circular groove (32). A drive motor (34) is fixedly installed at the bottom of the base (31). The output end of the drive motor (34) is connected to the bottom of the main bevel gear (33) through a coupling. A secondary bevel gear (35) is rotatably connected to the inner wall of the circular groove (32) in a ring at equal intervals. The inner end of the lead screw (22) is connected to the outer side of the secondary bevel gear (35) through a coupling.

3. A floating self-locking clamp according to claim 2, characterized in that, The drive module (3) also includes a cover plate (36), which is bolted to the top of the base (31) and covers the outside of the main bevel gear (33) and the secondary bevel gear (35) in the circular groove (32).

4. A floating self-locking clamp according to claim 1, characterized in that, The bottom of the fixture platform (1) is fixedly equipped with support legs (5) arranged in a ring at equal intervals, and the bottom of the support legs (5) is fixedly equipped with mounting rings (6).

5. A floating self-locking clamp according to claim 4, characterized in that, The top of the mounting ring (6) is provided with mounting holes (7) arranged in a ring at equal intervals. The mounting holes (7) are countersunk holes. The outer corners of the mounting ring (6) and the outer corners of the fixture table (1) are both rounded.

6. A floating self-locking clamp according to claim 1, characterized in that, The floating clamping module (4) includes a fixed arm (41), which is fixedly installed on the top of the slider (23). A trapezoidal frame (42) is fixedly installed on the inner end of the fixed arm (41). The trapezoidal frame (42) is arranged in an isosceles trapezoidal shape when viewed from above. Floating clamping groups (43) are fixedly connected to the two inclined surfaces on the inner side of the trapezoidal frame (42).

7. A floating self-locking clamp according to claim 6, characterized in that, The floating clamping assembly (43) includes floating springs (431). The floating springs (431) are linearly arranged at equal intervals and fixedly installed on the inclined surfaces on both sides of the trapezoidal frame (42). A clamping plate (432) is fixedly installed on the side of the floating spring (431) away from the trapezoidal frame (42). A support guide shaft (433) is fixedly installed at both ends of the outer side of the clamping plate (432). The outer end of the support guide shaft (433) passes through the trapezoidal frame (42), and the support guide shaft (433) and the trapezoidal frame (42) are slidably connected.

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